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Extensions to the finite-element method for nonlinear magnetic-field problems

Thesis/Dissertation ·
OSTI ID:6477543

Since the early seventies, finite-element methods (FEM) have provided more flexibility than other numerical techniques and have become the leading engineering tool for field computations. This thesis is concerned primarily with the application of FEM to the solution of magnetic fields and the design of power equipment. The thesis can be classified into five categories: (1) application of the FEM to nonlinear magnetostatic field problems and modification of the two-dimensional field formulation to compensate for three-dimensional effects, (2) computation of magnetic forces and torques directly in terms of the magnetic-vector potential and FE quantities, (3) application of the FEM to nonlinear time-dependent two-dimensional and axisymmetric magneto-mechanical problems, combining all of the system's governing equations into a single linear set of algebraic equations, (4) formulation of the nonlinear FE problem in an inverse fashion, and (5) application of the FEM to nonlinear axisymmetric steady-state AC multiconductor field problem.

Research Organization:
Rensselaer Polytechnic Inst., Troy, NY (USA)
OSTI ID:
6477543
Country of Publication:
United States
Language:
English

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Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CALCULATIONS
ELECTRICAL EQUIPMENT
EQUIPMENT
FINITE ELEMENT METHOD
MAGNETIC FIELDS
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
TWO-DIMENSIONAL CALCULATIONS